Cushion side bearing



Wv L. DOWNEY CUSHION SIDE BEARING Filed April 19 1926 April 22, 1930.

w u 7/ m a a 0 i and finally claim."-

Patented Apr. 22, 1930 UNITED- STA S:

WALTERL; nowNEY, OF 3103mm, VIRGINIA ofisir'ionsrnnnnzi ieine i Application filed semis,

The object of this invention is to provide 1 5 by a cover-inovably secured to the 'box, the

spring or springs being secured within the box' under compression, and the partsbeing readily accessible for assembling and repair purposes, as I will proceed now'to explain In the accompanying drawings illustrat ing the invention, in the'several figures of which like parts are similarly designated, Figure 1 is a top plan view. Fig. 2 is'a side elevation. F ig. 3: is a vertical longitudinal section. r

Thebox 1 may be of 'rectangularcross section, having the bottom lugs 2- for securing it to a bolster, as by bolts'or' rivets, al- I though the box maybe cast cr -forged integra l with the bolster, or welded thereon. The

end walls ofthe box, at their. tops, are pro-.

vided with the laterallyi extended flanges 3 1 and the cavity in the bo'xis adapted to receive one or more springs 4:.

The cover 5 is of greater the sides of 1 the coverfhave the dependingfianges 6 in the opposite ends of which are the verticallyslotted openings 7 which are located in the flanges beyond the. end' walls of the box. These openings aredesigned to receive the keys 8 which are passed through 1 the openings7 beneath theflanges 3 andv'aresecured therein by cotterpinsor otherfastenings 9, to permit the vertical movement of the cover and keys. The construction and arrangement is such that the cover is movablyconnected with the box and yieldable under the action of the spring or springs within 1926. S erial 1e. 7 ioaozo.

the box, whereby 'a' cushioning efi ectbetvveen ,the pairs 'of side bearings is secured. The

flanges 610verlap the side walls of'the box and prevent sidewise displacementof the cover, and the cooperation of the flanges?) with the cover and the keys 8 and their'fastenings 9 prevents the endwise displacement of the goiter when the parts are assembled on'the 7 v v I, I I have shown the bearing as provided with a single pocket, although it may be construct ed with any-number of pockets; and the springs used therein-may be nested asshown in Fig. 3, or otherwise disposed. v The coveris applied to the box and the springs therein under'pressure'and while the springs areund'er compression,and then the keys 8 are applied to the cover and box and locked in position, the action of 'the springs after being released from the aforesaid pressure serving tojliftthecover and provide the necessary clearance for the yie'lding of the cover in use.

For repair or other be readily removed by pressing it down on the box-and taking out the cotters and keys,

without otherwise deinounting the structure.

As already stated, the boxes may be made separate and attached to the body or truck bolsters or both of them, or they may becast or forgedintegral' with the bolsters or either ofth'em. I

z The box and its cover platema-y be cast or forged, and whenthe' box is made separate,

I i it maybe bolted, riveted or welded,or'other length than the greatest over-all length of the flanges '3, I and wise'secured to thebolster. v When a car, supplied with these side bearpurposes, the cover may i ings, is in vertical position, the top and bottompside bearings on the body andftru'ck bolsters, maybe merely incontact and with'-. out friction or carrying weight,.or theremay be. clearance between the top side bearing and the-bottom side bearing. VVhenone side otthe truck falls into a .low joint in the track, thereby causing the opposite-side of the truck tostart oscillations of thebody with asharp blow,-thecushioning will sustain the heavy blow to the truck, and instead of the side of the truck striking the low 'joint coming upor rebounding, and striking the;

body another blow and thereby starting rolling of the car body, the springs on that side will assistin putting the car body in proper position, but the springs in the cushion side bearings will immediately cease functioning when the opposite bearings come into contact, since the springs have only a limitedtravel. In other words,,the springs in the bearings will stop functioning when the car is in upright position, thereby preventing any kickback of one spring against the other;

Some of the advantages'incident to my invention are as follows :In use the cushion side bearing will start at zero side bearing. clearance, or more, if desired, and immediately when top and bottom; bearings come into contact, oscillation is retarded andcushione-d',. andthere is prevented the buildingup, bythe' si-dewiserolling,-of a dangerous roll, such as would tend tocause the car; Wheels to leave the rails at certain critical speeds; thereby keeping the heavy oscillations down undereightmilesan' hour.- Furthermore, these cushion side bearings overcome practically all tendency of vthebo'lster springs to go solid and: breaking or taking apermanent setthat is detrimental tothe'm; Vhile the side bear ingsa re designed to permit approximately a quarter-inch travelor clearance before the cover 'comes solid on the box, it is optional whether this is more or less, andit" is govearnedsomewhat by the spacing between the bearings oneach side ot the car andalso by;

theheight of'centerof gravity of the car and Etslading, v

It iswell-known-that failures inthe bolster springs are the result of the heavy rolling and oscillations of the car body transmitted by the weight of the rocking carthrough the side bearings'and bolsters, and the side bearfancy will set up a time element inthe: os-V cillations that wilh approximately decrease:

the: critical speed three times what it is with thec'o'nstructions commonly used, and cbnse quently the critical-speed of heavily-loaded I carsis put a salfedistance' below normal operating speeds on railroadsz Furthermore; these cushion side bearings-' will also-absorb the: sharp blowsinci-dent 't'o constructions commonly used, and-'- thereby prevent the breaking of-the-fsid-e bearings; andymoreove'r',

will constantly reducethe efle'ctive force of the blbws which cause: Bent and broken bolstersg side'frames; arch bars andtheliker As already stated; the sharp: Blows that other Wise wculdibe imposed on the ro'adbed are-ab boxhavi-ng end and side walls, andlaterally extended flanges at the tops of its end walls,; asuitable number of springs arranged insaid" box; a cover of alength greater than the" greatest distance between; the outer ends 0t said flanges, said cover having opposite depending flanges overlapping, the side walls of the box and provided withvertically slotted openings locatedtherein beyond the end wallsof the box and alined with said box flanges, said cover yieldingly mounted on the springs above t'he top-of the-box an'd keys arranged-transversely of thebox in the open-- ings in=the cover and-beneaththe box flanges and: outside of the end walls' of the'box and greatest. distance between the outer ends of said flanges, said cover having. opposite depending flanges overlapping the side walls of the box and: provided" with vertically slotted openings located therein beyondthe end walls of-the' b0x and=alined with said boxflanges",'- said cover yieldingly mounted on the springs above the'top of the box, andkeys arranged transversely of the box in the open ings in the coverand beneatli the box'flanges and outside' of the: end wallsoft'he box andhaving vertical movement in1said'op'enings,-

and meansto lock the keys in position, the

cover bein applied to' the box while the springsare under compression and when so applied having a clearance which will per- Init-the movements oocasioned when the bear ing is in service' and accessible iromwheout siuefor repairs;

In testimony whereof'I haye' hereunto setmy'haud this 17th day of April 13,1926.

WALTER E, DOWNEY. 

